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Floods in Montana
Track floods in Montana during the last 30 days on a live interactive map, with the newest verified events listed first.
Current events · newest first
Showing 11 of 11 events- Flash Flood Warnings — Billings3 related reports
3 related advisories are grouped here. Expand the group to review every affected area and source advisory.
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- Flash Flood Warning — NWS Billings MT (issued Sep 18 7:40PM MDT)
The National Weather Service in Billings, MT issued a Flash Flood Warning effective September 18 from 7:40 PM MDT until 10:15 PM MDT for the Billings area. Immediate flooding of low-lying areas, roads, and properties is possible during the warning period.
- Flash Flood Warning issued September 18 by NWS Billings MT
The National Weather Service office in Billings, MT issued a Flash Flood Warning beginning September 18 at 7:31 PM MDT (2026-09-19T01:31:00Z) and valid until September 18 at 10:15 PM MDT, per the alert title and publication timestamp.
- Flash Flood Warning issued by NWS Billings MT
National Weather Service (Billings, MT) issued a Flash Flood Warning on September 18 at 6:52 PM MDT (published 2026-09-19T00:52:00Z), effective until September 18 at 9:00 PM MDT. The warning indicates imminent flash flooding risk in the Billings, Montana area.
- Flash Flood Warning — NWS Billings MT (issued Sep 18 7:40PM MDT)
- Flood Watches — Billings2 related reports
2 related advisories are grouped here. Expand the group to review every affected area and source advisory.
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- Flood Watch issued September 19 at 6:42AM MDT until September 20 at 6:00PM MDT by NWS Billings MT
The National Weather Service office in Billings, MT issued a Flood Watch effective Sept 19 6:42 AM MDT through Sept 20 6:00 PM MDT for areas served by the Billings forecast office.
- Flood Watch issued September 18 at 10:59PM MDT until September 20 at 6:00PM MDT by NWS Billings MT
The National Weather Service office in Billings, MT issued a Flood Watch beginning September 18 at 10:59 PM MDT and valid through September 20 at 6:00 PM MDT. A Flood Watch means conditions are favorable for flooding during that period; people in the covered area should monitor forecasts and be prepared to take action if warnings are issued.
- Flood Watch issued September 19 at 6:42AM MDT until September 20 at 6:00PM MDT by NWS Billings MT
- Flash Flood Watch issued September 19 at 3:09AM MDT until September 20 at 12:00AM MDT by NWS Great Falls MT
The National Weather Service in Great Falls, MT issued a Flash Flood Watch effective Sep 19 3:09 AM MDT through Sep 20 12:00 AM MDT for the Great Falls, Montana area, indicating conditions may produce flash flooding.
- Flash Flood Watch — NWS Great Falls, MT (Sep 19)
The National Weather Service Great Falls office issued a Flash Flood Watch effective September 19 from 3:09 AM MDT until 6:00 PM MDT for the Great Falls, Montana area.
- Flood Watch issued September 19 at 3:09AM MDT until September 19 at 6:00PM MDT by NWS Great Falls MT
The National Weather Service office in Great Falls, MT issued a Flood Watch effective Sept 19 at 3:09 AM MDT through Sept 19 at 6:00 PM MDT. Flooding is possible during this period in and around Great Falls, Montana.
- Flood Watches — Montana2 related reports
2 related advisories are grouped here. Expand the group to review every affected area and source advisory.
View individual reports
- Flood Watch issued Sep 19 2:01 AM MDT by NWS Glasgow, MT
The National Weather Service in Glasgow, Montana issued a Flood Watch on Sep 19 at 2:01 AM MDT in effect until Sep 20 at 6:00 PM MDT, indicating conditions may support flooding in the Glasgow area.
- Flood Watch issued by NWS Billings, MT (Sep 18–20, 2026)
The National Weather Service in Billings, Montana issued a Flood Watch beginning September 18 at 10:59 PM MDT and continuing through September 20 at 6:00 PM MDT, indicating conditions favorable for flooding in the Billings area.
- Flood Watch issued Sep 19 2:01 AM MDT by NWS Glasgow, MT
- Flood Advisory near Billings, MT (Sep 18 7:08–10:15PM MDT)
National Weather Service (Billings MT) issued a Flood Advisory effective September 18 at 7:08PM MDT until September 18 at 10:15PM MDT.
- Flash Flood Warnings — Montana2 related reports
2 related advisories are grouped here. Expand the group to review every affected area and source advisory.
View individual reports
- Flash Flood Warning — Billings, MT (issued Sep 18 9:11PM MDT)
The National Weather Service in Billings, MT issued a Flash Flood Warning starting Sep 18 at 9:11 PM MDT (2026-09-19T03:11:00Z) for the Billings area, in effect until 10:15 PM MDT (about 2026-09-19T04:15:00Z). Heavy rainfall may produce rapid flooding of low-lying areas and roadways.
- Flash Flood Warning issued by NWS Billings, MT (Sep 18 6:02PM MDT–9:00PM MDT)
The National Weather Service in Billings, Montana issued a Flash Flood Warning beginning September 18 at 6:02 PM MDT (2026-09-19T00:02:00Z) and continuing until 9:00 PM MDT the same evening for the Billings area.
- Flash Flood Warning — Billings, MT (issued Sep 18 9:11PM MDT)
- Flood Advisory issued September 18 by NWS Billings MT
The National Weather Service office in Billings, MT issued a Flood Advisory effective September 18 from 5:24 PM MDT until 8:30 PM MDT (per the advisory title and published timestamp).
- Flood Advisory issued September 19 at 8:13AM MDT until September 19 at 1:15PM MDT by NWS Glasgow MT
National Weather Service Glasgow, MT issued a Flood Advisory effective Sept 19 8:13 AM MDT to 1:15 PM MDT for the Glasgow, Montana area.
- Flood Advisory issued September 19 at 7:46AM MDT until September 19 at 1:45PM MDT by NWS Great Falls MT
The National Weather Service Great Falls (MT) issued a Flood Advisory on 2026-09-19 effective 7:46 AM MDT (2026-09-19T13:46:00Z) through 1:45 PM MDT for the Great Falls, Montana area.